308 STATE BOARD OF AGRICULTURE. 



Niagara Brand Lime-sulfur Solution, made by the Niagara Sprayer 

 Company of Middleport, New York, This mixture has just been in- 

 troduced here during the last year. In appearance it is very similar to 

 the Rex brand and is mixed in the same proportion. 



Cooper's Fluid VI (Winter Spray), made by William Cooper & 

 Nephews of Berkhamsted, England, with American offices in Chicago, 

 Illinois. A very smooth, fine oil, smelling quite strongly of carbolic 

 acid. Mixed at the rate of one gallon to one hundred gallons of 

 water. 



Target Brand Scale Destroyer, made by the American Horticultural 

 Distributing Company of Martinsburg, West Virginia. An oil spray 

 of dark brown color, turning white when added to water. Mixed in 

 proportions of one of oil to twenty-five of water. 



Water Soluble Oil, made by the Thomson Chemical Company of 

 Baltimore, Maryland. Also an oil mixture. Does not turn white 

 when mixed with water. INIixed at the rate of one to twenty-five of 

 water. 



The tests were tried on moderately infested pear trees, and all of the 

 mixtures were applied on April 20th. 



The Rex and Niagara brands gave very similar results, both do- 

 ing very efficient work, about equal to that obtained with the home- 

 made lime-sulfur. These sprays do not whiten the trees as well as 

 the 25-15-50 formula of the home-made mixture and it is well to add 

 several pounds of lime, in the form of milk of lime to make the spray 

 more noticeable, thus making it easier to tell how thoro the work has 

 been done. The trees should always be gone over a second time to 

 cover the places untouched by the first spraying. 



The Target Brand Scale Destroyer and Cooper's Fluid VI. gave 

 very poor results, neither seeming to have very much effect on the scale. 

 The Target brand has been tried for several years here with the above 

 result. Both mixtures stay in suspension very well. Cooper's Fluid 

 costs |3.00 per gallon and one gallon is enough for one hundred gal- 

 lons of spray. Regardless of efficiency, the cost would almost pro- 

 hibit its general use. It costs about three times as much as the home- 

 ii.ade lime-sulfur solution. The cost of the Target Brand Scale Emul- 

 sion is fifty cents per gallon and two gallons are needed for fifty 

 gallons of spray. This makes its costs double that of the home- 

 made sulfur-lime. 



The Water Soluble Oil gave quite good results, altho not as good as 

 that obtained with the lime-sulfur solutions. The scale increased on 

 the trees sprayed with this mixture faster during the summer than it 

 did on those sprayed with the lime-sulfur solutions. Its cost is the 

 same as that of the Target Brand. Besides costing more and being 

 less effectual for the scale, none of the oil sprays have the fungicidal 

 value that the lime-sulfur sprays have. 



liome-Made and Prepared Lime-Sulfur Mixtures: 



The main difference for the consideration of the fruit grower in 

 the use of a lime-sulfur spray between the home-made and the pre- 

 pai'ed mixtures is the cost. The present way of making the home-made 

 lime-sulfur might also be a serious consideration when one thinks the 

 trouble of making it is too great. 



